Allof the following statements concerning oligotrophic lakes are true, except:a.warm temperatures.b.low nutrients.c.high oxygen content.d.deep and clear waters.e.low biological productivity.

Which of the following is not a result of increased global temperatures? a. warmer waters b. none of the above c. melting glaciers d. increased evaporation e. ocean acidification

Place the following components of the hydrologic cycle in the correct order by numbering them from 1 to 5, beginning with precipitation. a. precipitation b. uptake by plants c. transpiration d. water percolation into soil e. condensation

The ecosystem of a lake or pond can be divided into 3 zones. Which zone is very cold and consists of the dead remain of organisms?

Terrestrial NPP   a. generally increases with temperature.   b. does not vary with precipitation.   c. is high when soils are low in nutrients.   d. is high in dry regions.

9- Which of the following is NOT true about turnover in freshwater lakes?        a- Turnover brings up nutrient-rich water from the lake bottom.        b- Turnover brings up oxygenated water from the lake bottom.        c- Turnover sends oxygenated water from the lake's surface to the lake bottom.        d- Turnover usually occurs in the spring and fall seasons. 10- The aquatic biome that represents the transition area between a river and a sea is called a(n) __________. 11- An example of a biotic interaction that could limit a plant's distribution is __________.        a- rabbit herbivory        b- extreme winters        c- acidic soils        d- a fire regime 12- Each female herring (a species of fish) produces millions of eggs each year. Which type of survivorship curve do herring probably have?        a- Type II        b- Type I    c- Type IV        d- Type III 14- Which of the following is NOT a mechanism of density-dependent population regulation?        a- predation        b-…